Katy Perry at the 51st Annual GRAMMY Awards at Staples Center in Los Angeles, CA on February 8, 2009.

Katy Perry at the Salute To Icons Clive Davis Pre-Grammy Gala at Beverly Hilton Hotel in Beverly Hills, CA on February 7, 2009.

Katy Perry at the 2010 MTV Movie Awards at the Gibson Amphitheatre at Universal Studios in Hollywood on June 6, 2010 in Los Angeles, CA.

Katy Perry at the 53rd Annual Grammy Awards at Staples Center in Los Angeles, CA on February 13, 2011.

Katy Perry at the Nickelodeon’s 23rd Annual Kids’ Choice Awards at UCLA’s Pauley Pavilion in Westwood, CA on March 27, 2010.

Katy Perry at VH1’s 14th Annual Critic’s Choice Awards at Santa Monica Civic Auditorium in Santa Monica, CA in January 8, 2009.

Katy Perry in the press room at the 51st Annual GRAMMY Awards at Staples Center in Los Angeles, CA on February 8, 2009.

Katy Perry arriving at the 52nd Annual GRAMMY Awards held at Staples Center in Los Angeles, California on January 31, 2010.

Katy Perry arrives at the 2011 Pre-GRAMMY Gala And Salute To Industry Icons at Beverly Hilton Hotel on February 12, 2011 in Beverly Hills, CA.

Katy Perry at the 2010 American Music Awards at the Nokia Theatre L.A. Live in downtown Los Angeles, CA on November 21, 2010.